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I was trying to initialize a simple two dimensional array as follows: const arrays = Array(3).fill([]); However, when I tried to push an entry into one of the arrays, it seems like it gets push...
The Caesar cipher is a substitution cipher in which the letters of an ordered alphabet are cyclically shifted by a given number. A detailed description can be found e.g. here. Let u be the index o...
I have to migrate a bunch of text from an old application into a new one. Some of these texts contain HTML tags and entities (HTML editor was used) and now they do not want to support this in the n...
I need to load a site based on a cookie. I wrote code to validate that, like this. if(!isset($_COOKIE['cookie'])){ $domain = $_SERVER['SERVER_NAME']; setcookie('cookie', $cookie, time() ...
I have a code block like this: try { ... x.foo(); // This is the line that forces us to have the try block ... } catch (ArrayIndexOutOfBoundsException e) { logger.error(e.getM...
I am attempting to write a program to simulate Hunt The Wumpus in the K programming language. The game requires a grid that is created by the vertices of a Dodecahedron, which is cyclic and triangu...
Let's say I have this class I want to mock class A { public void add(T arg) { B b = A.getB(); U val = somefunc(arg); V ret = b.add(val); } } I have a spy o...
I have the following scenario (in MySQL 8): CREATE TABLE `steps` ( `id` int NOT NULL AUTO_INCREMENT, `number` varchar(30) DEFAULT NULL, `parent_number` varchar(30) DEFAULT NULL, `timestamp` ti...
Assume I have this class Foo class Foo { private int x; void setX(int x) { this.x = x; } } And I have a Junit test like this: Bar bar; @BeforeEach void setu...
I'm trying to use H2O to serve a multi-file PHP website without routing—just having a separate PHP file for every page. The relevant part of my H2O config currently looks like this: paths: "/":...
I have console scripts in my virtual environment in \env\Scripts, installed with packages (e.g. black, pytest, coverage). If I try to execute these in Git Bash, the output is not returned to the te...
Let's say I have this class: class myService { private boolean foo(T arg) { return arg == 42; } public Response bar(U arg) { if(foo(U.field)) { return Response.st...
I have some code connecting to an active directory via ldap. Something like this: public Response add(User user) { try { LDAPConnectionPool ldapPool = ldapConnectionPool.getPool();...
I use the devise authentication gem for a Rails application and it's very convenient. Typically I want my users to confirm their registration by email. Therefore the User model looks like class U...
Is it legal ISO C to declare a function as noreturn with a non-void return type (but of course not actually returning)? As far as I can read from the standard, it seems legal. Example: noreturn ...
I've created a function that calls scanf passing a void pointer as argument: void read(const char *format, void *p) { scanf(format, p); } And tested it with different types: int n; read...
Background This is kind of a subquestion to How to properly use malloc? When allocating, there are basically two common ways of using the sizeof operator: int *p; p = malloc(n * sizeof *p); /...
I found a form I wanted to duplicate on a roof construction website. All my input boxes are centered except the last one that's a bit off and I cannot figure out why. Here is my code: HTML <...
When using the Array.prototype.sort method, we can pass a compare function as argument. Then, this function can be used to process array's elements, so the comparison is made using some custom crit...
I am developing a web app that is tied to a database. My codebase is stored on a private GitLab instance. I would like to set up a workflow that would look something like this: I have a developm...
I have seen this construct quite a lot: int *p = (int*) malloc(n * sizeof(int)); Is this how it should be? What is the proper way to use malloc? I have also seen this: int *p = malloc(n * size...
Consider this code: #include <stdio.h> int main(void) { static void *ptr; if(ptr == NULL) puts("It's NULL!"); } I wonder if this is guaranteed to print "It's NULL!" I know ...
I am caching some very static information (changes once per day) in my ASP.NET Core application. This is normally done when needed ("lazy"). One such cache item is a 50K list of items that are tak...
I have an Angular application. The frontend has a mechanism that periodically fetches some information like this: ngOnInit(): void { setInterval( () => { this.http.get(... ).sub...
Our team is finally focusing on writing more automatic testing and one of my ex-colleagues recommended to try out the Verify library. The tool does the following: runs the test and compares the...
I'm starting a small site with some online tools. Tried to include Google Adsense but I initially got rejected because the site was still on construction. Yet I've seen in the forums that they are...
I am interested in finding out all the aspects I need to cover in order to correctly assess if a user has stopped interacting with a web page. So far, I found the following: Idle Detection API -...
There are a lot of articles and presentations that show little love for ORMs. This is mainly because some queries are so complex and heavy on the database that they lead to significant issues in p...
During a presentation of a pipeline configuration, a colleague showed a SonarQube integration and one of its reports. A warning was caused by overrunning the max value for the code complexity thres...
Our team will have to migrate an old application to use a new tech stack. One of the features involves the usage of HTML editors which serialized the content as HTML and I am able to see valid HTML...
I have this bootstrap code (grid) <div class="container p-3 center"> <div class="row"> <div class="bg-light border-bottom border-secondary border-top col-6 te...
One of the legacy applications my team has to maintain has almost always this pattern for dealing with data modification: try { // get the connection // begin transaction // optional...
I am trying to create an app with two toolbars on top and a specific collapsing/expanding behaviour on scrolling. See the mockup to get a deeper understanding of what I'm trying to achieve: I fo...
In Python 2, I was able to create a file named .env within a project folder like so: # .env MY_ID=abc123 TOKEN=4567890 Then in a Python file in the same directory, I could read these variable...
I'm trying to write a MIME message to the console. ByteArrayOutputStream out = new ByteArrayOutputStream(); MimeMultipart replyMsg = mdnCreator.createMDNData(); replyMsg.writeTo(out); out.close...
I have noticed that lots of projects (both in real-world and within online courses) use Automapper to map domain models to view models, API models. The main advantage seems to be convenience by re...
Agner Fog has this C++ Vector Class Library, which is ... useful for improving code performance where speed is critical and where the compiler is unable to vectorize the code automatically in an...
I have not used a database trigger in years in the projects of the teams I have worked in, but I have seen them being used by other teams. Back in 2009, it seemed like a heated debate, but I am wo...
A person I used to work with several years ago was hired to rewrite a product using a .NET-based modern tech stack. One of the aspects that stroke me was that he believes that the product should mo...
Suppose I am using a Java API from Kotlin and I want to call a function that takes a FloatArray (represented as float[] in Java), and I have an Iterable<Float> as my input data type. To be mo...
I understand that in object-oriented programming, an object is an instance of a class. If it's an instance, I misunderstand why does it need the term object at all (we could just say "instance"). ...
When reading posts at programming sites such as this one, I frequently encounter people saying things like: "There is no pass-by-reference in C, everything is passed by value." People claiming su...
Background story: I'm on mac OS 11.6 and would like to access an identifier for the current space/desktop from the command line. I found a helpful article at https://ianyh.com/blog/identifying-spac...
I am trying to listen to the event in which the keyboard key containing the Hebrew final-letter ך is pressed. This key stands for both the English letter L and the Hebrew final letter ך. If my op...
What (if anything) does the C standard have to say about linking objects? My guess is that, because C only defines language->behavior rules, it completely ignores any potential intermediate form...
Can anyone help me, I'm currently learning pointers, this is the code I wrote to try and insert a node at the beginning of the list. However at the part where I included the comment of "error at th...
Loss leader is a marketing pattern implemented in stores: A customer enters a store and while heading to some most desired expensive products far from entrance, that customer picks some products s...
In Vim, it's possible to tell it to read from stdin instead of a file, by using vim -. This is so that you can pipe the output of one command into Vim, to view/edit it there. The problem I'm facin...
I'm working on a system where the frontend will make a call to the backend to perform an action. Sometimes this action can cause other unintended consequences (like charging the customer), in thes...
A few of my services rely on LazyCache and they use it by injecting IAppCache. For unit testing, I would like to mock this. I have found MockCachingService, but it does not do any caching (as spec...
